Thanks Andy!  This helps.

Craig

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT vm.marist DOT edu] On Behalf Of 
Huebner,Andy,FORT WORTH,IT
Sent: Wednesday, May 02, 2012 12:34 PM
To: ADSM-L AT vm.marist DOT edu
Subject: Re: [ADSM-L] Tivoli Server Specs

I have about 500 nodes on my p5's running 5.4 and they are on the edge.
The P7's running 6.2 have less than 250 nodes and are overpowered.

Testing indicates that the upgrade of the p5's to p6's and 6.2 will leave room 
to grow.
All 6.2 servers are 32GB.  The p7's are 2 CPU and the p6's are 4 CPU.  All are 
allowed to steal CPU (LPARs are great).  The disks are SAN attached, I am using 
real and imagined tape and disk pools.
I do not dedup with TSM.

Things to consider:
1. if you can complete your backups in the window you have enough network 
bandwidth 2. if you can complete expiration in a reasonable time you have 
enough CPU 3. if you can complete reclamation in a reasonable time you have 
enough storage bandwidth

The hard part is all three can be affected by slow disk, not enough RAM and a 
busy CPU.

Profile the current server and see where it is no longer performing to 
expectations and make sure that the weak points are addressed with the new 
hardware.  If an upgrade from 5 to 6 is also happening make sure the new system 
addresses the change in DB.

In my case the p5's are losing the expiration battle, the test runs with 6.2 on 
the p6 show great improvement in run time (faster CPU and some 6.2 
improvements).  I also found my network was staying busy longer during the 
backup window, so I doubled the bandwidth.  In 2 weeks theory becomes reality.

I am sure your situation is different, but I hope this helps.  Others may have 
additions or other ideas.

Andy Huebner


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Ballenger, Craig
Sent: Tuesday, May 01, 2012 3:08 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Tivoli Server Specs

Please see below...

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT vm.marist DOT edu] On Behalf Of 
Huebner,Andy,FORT WORTH,IT
Sent: Tuesday, May 01, 2012 10:38 AM
To: ADSM-L AT vm.marist DOT edu
Subject: Re: [ADSM-L] Tivoli Server Specs

A few details would help.
1. How many nodes - 380
2. How much data (total & daily) - not sure, but the DB is 256 GB on the 
largest TSM instance.
3. Deduplication - No dedup.

I have a pair of P7s with 32GB RAM that are running great.  I have 4 P5s that 
are a bit overloaded that will be upgraded to P6 with 32GB RAM.  No dedup and 
about 4,000 nodes total.


Andy Huebner

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Ballenger, Craig
Sent: Tuesday, May 01, 2012 9:15 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] Tivoli Server Specs

All,

I am attempting to spec out a server(s) for TSM 6 and were wondering what 
hardware you folks are running it on.  We were looking at the Power Series from 
IBM (POWER6/POWER7).  Any info will help.

Thanks,

Craig Ballenger

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